US20050023077A1 - Muffler for noise reduction - Google Patents
Muffler for noise reduction Download PDFInfo
- Publication number
- US20050023077A1 US20050023077A1 US10/628,156 US62815603A US2005023077A1 US 20050023077 A1 US20050023077 A1 US 20050023077A1 US 62815603 A US62815603 A US 62815603A US 2005023077 A1 US2005023077 A1 US 2005023077A1
- Authority
- US
- United States
- Prior art keywords
- muffler assembly
- assembly
- fiberglass
- reactive
- muffler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/0335—Noise absorbers by means of external rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
- F04C29/063—Sound absorbing materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/21—Rigid pipes made of sound-absorbing materials or with sound-absorbing structure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
Definitions
- the present invention relates to a muffler assembly for dampening acoustic transmission. More particularly, the present invention relates to a muffler assembly for reducing sound transmission in chiller apparatuses.
- Water cooled chillers used in refrigerator assemblies are required to meet stringent noise level emission standards, such as those prescribed by OSHA.
- stringent noise level emission standards such as those prescribed by OSHA.
- screw chillers with low oil flow, tend to emit high levels of noise.
- the primary source of noise in such systems is the screw compressor.
- the noise produced by the compressor is propagated either by gas, or by structure. It is possible to attenuate the intensity of the gas borne noise through the use of a muffler. It is therefore common in the art to employ a single muffler located in the center of a discharge pipe in order to reduce noise level emissions. However, it is often the case that noise level emissions are still above acceptable values even when employing a single muffler as described above.
- the present invention provides a muffler assembly for dampening acoustic transmission. More particularly, the present invention provides a muffler assembly for reducing sound transmission in chiller apparatuses.
- It is a further object of the present invention to provide a muffler assembly which comprises an outer muffler assembly comprising a plurality of fiberglass discs and a plurality of reactive plates, and an inner muffler assembly comprising a plurality of fiberglass discs and a plurality of reactive plates, the inner muffler assembly generally surrounded by the outer muffler assembly and defining therebetween a gas flow gap.
- FIG. 1 is an exploded view of the outer muffler assembly and the inner muffler assembly of the present invention.
- FIG. 2 is a cross-section of the outer muffler assembly and the inner muffler assembly of the present invention attached to a pipe.
- FIG. 6 is an illustration of the construction of the cloth and metal screen of the present invention.
- FIG. 7 is a detail of the construction of the inner muffler assembly of the present invention.
- outer muffler assembly 11 is fastened to inner muffler assembly 13 through the use of bolts or screws. Once fastened to each other, outer muffler assembly 11 and inner muffler assembly 13 are preferably spot welded to pipe 21 at a plurality of points of contact.
- a corresponding number of rods 45 is then pushed through the plurality of holes along the length of the assembled fiberglass discs 41 and reactive plates 43 .
- end plates 51 are attached at either end of the assembly and the fiberglass discs 41 and reactive plates 43 are compressed into tight contact with one another. This compression is important as it provides the correct density for sound attenuation.
- FIG. 5 there is illustrated the inner muffler assembly of the present invention.
- the construction of the inner muffler assembly 13 is substantially similar to that of the outer muffler assembly 11 .
- FIG. 7 there is detailed the construction of inner muffler assembly 13 .
- the fiberglass/cloth/screen assembly 71 is slid onto the center tube 73 .
- the end plate 51 is then slid onto the other end and welded to the center.
- the perforated cover 75 is placed over the assembly 71 and welded to both the end plates 51 .
Abstract
Description
- (1) Field of the Invention
- The present invention relates to a muffler assembly for dampening acoustic transmission. More particularly, the present invention relates to a muffler assembly for reducing sound transmission in chiller apparatuses.
- (2) Description of Related Art
- Water cooled chillers used in refrigerator assemblies are required to meet stringent noise level emission standards, such as those prescribed by OSHA. In particular, screw chillers, with low oil flow, tend to emit high levels of noise. The primary source of noise in such systems is the screw compressor.
- The noise produced by the compressor is propagated either by gas, or by structure. It is possible to attenuate the intensity of the gas borne noise through the use of a muffler. It is therefore common in the art to employ a single muffler located in the center of a discharge pipe in order to reduce noise level emissions. However, it is often the case that noise level emissions are still above acceptable values even when employing a single muffler as described above.
- What is therefore needed is a muffler arrangement for use in refrigerator systems capable of achieving a higher reduction in noise level as compared to that of the art.
- Accordingly, it is an object of the present invention to provide a muffler assembly for dampening acoustic transmission. More particularly, the present invention provides a muffler assembly for reducing sound transmission in chiller apparatuses.
- It is a further object of the present invention to provide a muffler assembly which comprises an outer muffler assembly comprising a plurality of fiberglass discs and a plurality of reactive plates, and an inner muffler assembly comprising a plurality of fiberglass discs and a plurality of reactive plates, the inner muffler assembly generally surrounded by the outer muffler assembly and defining therebetween a gas flow gap.
-
FIG. 1 is an exploded view of the outer muffler assembly and the inner muffler assembly of the present invention. -
FIG. 2 is a cross-section of the outer muffler assembly and the inner muffler assembly of the present invention attached to a pipe. -
FIG. 3 is an exploded view of the outer muffler assembly of the present invention. -
FIG. 4 is an exploded view of the outer muffler assembly of the present invention illustrating the arrangement of the fiberglass discs and the reactive plates. -
FIG. 5 is an exploded view of the inner muffler assembly of the present invention. -
FIG. 6 is an illustration of the construction of the cloth and metal screen of the present invention. -
FIG. 7 is a detail of the construction of the inner muffler assembly of the present invention. - It is therefore a central aim of the present invention to teach a muffler assembly for dampening acoustic transmissions. In particular, the present invention aims to reduce the transmission of sound in refrigeration components. As will be described more fully below, the present invention achieves this goal through the use of an outer muffler assembly in which is mounted an inner muffler assembly, the two assemblies being separated by a gas flow gap. Most importantly, the gas flow gap is of a distance equal to approximately ¼ the frequency of the sound to be dissipated.
- With reference to
FIG. 1 , there is illustrated theouter muffler assembly 11 and theinner muffler assembly 13 of the present invention. As illustrated, bothouter muffler assembly 11 andinner muffler assembly 13 are generally cylindrical in shape and disposed aboutcenterline 14. While illustrated with reference to cylindrical shapes,outer muffler assembly 11 andinner muffler assembly 13 may be of any shape such thatinner muffler assembly 13 may be largely enclosed by and inserted intoouter muffler assembly 11. - With reference to
FIG. 2 , there is illustrated a cross-section of the muffler assembly of the present invention attached to apipe 21. As is evident,inner muffler assembly 13 is inserted alongcenterline 14 so as to fit inside ofouter muffler assembly 11. As a result of this configuration, agas flow gap 17 is formed between the outer periphery ofinner muffler assembly 13 and the inside ofouter muffler assembly 11. As noted above, the distance ofgas flow gap 17 measured at a right angle away fromcenterline 14 and extending betweeninner muffler assembly 13 andouter muffler assembly 11 is preferably equal to {fraction (1/4)} wavelength of the frequency to be attenuated. In a preferred embodiment,outer muffler assembly 11 is fastened toinner muffler assembly 13 through the use of bolts or screws. Once fastened to each other,outer muffler assembly 11 andinner muffler assembly 13 are preferably spot welded to pipe 21 at a plurality of points of contact. - With reference to
FIG. 3 , there is illustrated in detail the structure ofouter muffler assembly 11.Outer muffler assembly 11 is constructed of a fiberglass andreactive liner assembly 35. As will be described more fully below, fiberglass andreactive liner assembly 35 is comprised of a plurality of fiberglass discs and reactive plates. In a preferred embodiment, fiberglass andreactive liner assembly 35 is situated betweeninner can 31 andouter can 33. Inner can 31 andouter can 33 are preferably two cylindrical cans made out of stainless steel perforated plate with a minimum of 50% open area. The diameter acrossinner can 31 is approximately equal to the inner diameter of the fiberglass discs and reactive plates. Likewise, the inner diameter ofouter can 33 is approximately equal to the outer diameter of the fiberglass disc and reactive plates. As a result, the fiberglassreactive liner assembly 35 fits snugly betweeninner can 31 andouter can 33. Onceinner can 31 is inserted into fiberglass andreactive liner assembly 35,outer can 33 is slid over the assembly and preferably welded toinner can 31. - With reference to
FIG. 4 , there is illustrated in detail the fiberglass andreactive liner assembly 35. Fiberglass andreactive liner assembly 35 is comprised, for the most part, of noise absorbingfiberglass discs 41 andreactive plates 43. In a preferred embodiment, there are situated twofiberglass discs 41 between each of tworeactive plates 43. The purpose of thereactive plates 43 is to act as a reactive element to reflect noise traveling in an axial direction back and forth in the direction ofcenterline 14. This reflected noise is dissipated as heat in thefiberglass discs 41. In a preferred embodiment, a plurality of holes, preferably three, are drilled in the same position on each of thefiberglass disc 41 andreactive plates 43. A corresponding number ofrods 45 is then pushed through the plurality of holes along the length of the assembledfiberglass discs 41 andreactive plates 43. After all of the fiberglass discs 41 andreactive plates 43 are connected in this manner,end plates 51 are attached at either end of the assembly and thefiberglass discs 41 andreactive plates 43 are compressed into tight contact with one another. This compression is important as it provides the correct density for sound attenuation. - In addition, a
polyester cloth 61 may be attached to ametal screen 63 and assembled at the outer diameter ofinner can 31 as illustrated inFIG. 6 . Thecloth 61 andscreen 63 are folded onto theend plates 51 so as to prevent fiberglass coming off of thediscs 41. - With reference to
FIG. 5 , there is illustrated the inner muffler assembly of the present invention. Note that the construction of theinner muffler assembly 13 is substantially similar to that of theouter muffler assembly 11. With reference toFIG. 7 , there is detailed the construction ofinner muffler assembly 13. The fiberglass/cloth/screen assembly 71 is slid onto thecenter tube 73. Theend plate 51 is then slid onto the other end and welded to the center. The perforatedcover 75 is placed over theassembly 71 and welded to both theend plates 51. - It is apparent that there has been provided in accordance with the present invention a muffler assembly for dampening acoustic transmission. More particularly, the present invention provides a muffler assembly for reducing sound transmission in chiller apparatuses which fully satisfies the objects, means, and advantages set forth previously herein. While the present invention has been described in the context of specific embodiments thereof, other alternatives, modifications, and variations will become apparent to those skilled in the art having read the foregoing description. Accordingly, it is intended to embrace those alternatives, modifications, and variations as fall within the broad scope of the appended claims.
Claims (8)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/628,156 US7100737B2 (en) | 2003-07-28 | 2003-07-28 | Muffler for noise reduction |
JP2006521919A JP2007500838A (en) | 2003-07-28 | 2004-07-22 | Silencer muffler |
CNB2004800218256A CN100538029C (en) | 2003-07-28 | 2004-07-22 | Reduce the silencing apparatus of noise |
PCT/US2004/023551 WO2005012699A1 (en) | 2003-07-28 | 2004-07-22 | Muffler for noise reduction |
KR1020067001903A KR100772300B1 (en) | 2003-07-28 | 2004-07-22 | Muffler for noise reduction |
EP04778872A EP1654446B1 (en) | 2003-07-28 | 2004-07-22 | Muffler for noise reduction |
CA002533299A CA2533299A1 (en) | 2003-07-28 | 2004-07-22 | Muffler for noise reduction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/628,156 US7100737B2 (en) | 2003-07-28 | 2003-07-28 | Muffler for noise reduction |
Publications (2)
Publication Number | Publication Date |
---|---|
US20050023077A1 true US20050023077A1 (en) | 2005-02-03 |
US7100737B2 US7100737B2 (en) | 2006-09-05 |
Family
ID=34103314
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/628,156 Expired - Fee Related US7100737B2 (en) | 2003-07-28 | 2003-07-28 | Muffler for noise reduction |
Country Status (7)
Country | Link |
---|---|
US (1) | US7100737B2 (en) |
EP (1) | EP1654446B1 (en) |
JP (1) | JP2007500838A (en) |
KR (1) | KR100772300B1 (en) |
CN (1) | CN100538029C (en) |
CA (1) | CA2533299A1 (en) |
WO (1) | WO2005012699A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006096178A1 (en) | 2005-03-07 | 2006-09-14 | Carrier Corporation | Compressor sound suppression |
WO2006110180A1 (en) * | 2005-04-11 | 2006-10-19 | Carrier Corporation | Compressor muffler |
CN103169424A (en) * | 2011-12-20 | 2013-06-26 | 乐金电子(天津)电器有限公司 | Diffuser capable of effectively reducing passing noise of vanes of motor |
US8584795B1 (en) * | 2012-09-04 | 2013-11-19 | Vac-Tron Equipment, Llc | Filter silencer |
WO2020223293A1 (en) * | 2019-04-29 | 2020-11-05 | Gast Manufacturing, Inc. | Sound reduction device for rocking piston pumps and compressors |
US20230392827A1 (en) * | 2017-10-11 | 2023-12-07 | Carrier Corporation | Muffler with metallic meshed rings |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060065478A1 (en) | 2004-09-30 | 2006-03-30 | Rockwell David M | Compressor sound suppression |
US20080029281A1 (en) * | 2006-04-27 | 2008-02-07 | Sun Yung-Yung | Pneumatic tool |
CA2545971A1 (en) * | 2006-05-09 | 2007-11-09 | Justin Moore | Muffler diffuser |
CA2711385A1 (en) * | 2008-01-04 | 2009-07-16 | Audeval Solutions Inc. | Muffler for pneumatic handheld tool |
CN101769588A (en) * | 2010-01-15 | 2010-07-07 | 汪祥 | Sound adsorbing device for ventilating system |
CN102367791A (en) * | 2011-11-04 | 2012-03-07 | 安徽江淮汽车股份有限公司 | Intake silencer used in air compressor of light truck pneumatic brake system |
CN103438133A (en) * | 2013-08-29 | 2013-12-11 | 合肥华凌股份有限公司 | Noise reduction damping part and refrigerator comprising same |
US20180058606A1 (en) * | 2016-09-01 | 2018-03-01 | Emerson Process Management Regulator Technologies, Inc. | Apparatus and method for retaining a noise attenuation assembly for use with a pressure regulator |
ES2806275T3 (en) | 2016-11-15 | 2021-02-17 | Carrier Corp | Lubricant separator with silencer |
WO2019074917A1 (en) * | 2017-10-11 | 2019-04-18 | Carrier Corporation | Muffler with metallic meshed rings |
US11732716B2 (en) | 2018-12-10 | 2023-08-22 | Carrier Corporation | Modular compressor discharge system |
Citations (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1844104A (en) * | 1929-05-08 | 1932-02-09 | Burgess Lab Inc C F | Exhaust muffler |
US2101460A (en) * | 1932-12-17 | 1937-12-07 | Schmidt Ulrich | Sound muffling device |
US3142354A (en) * | 1960-08-09 | 1964-07-28 | Gutehoffnungshuette Sterkrade | Sound absorption device and method of manufacture |
US3174583A (en) * | 1960-11-30 | 1965-03-23 | Giordano Michele | Muffler for internal combustion engines |
US3688870A (en) * | 1971-08-26 | 1972-09-05 | Stephen J Gibel | Through-flow aspirator muffler |
US3802163A (en) * | 1972-08-23 | 1974-04-09 | G Riojas | Internal combustion engine mufflers |
US3842932A (en) * | 1972-11-01 | 1974-10-22 | S Gibel | Sound-trap muffler |
US3949830A (en) * | 1975-06-20 | 1976-04-13 | George Koch Sons, Inc. | Fan silencer |
US4045157A (en) * | 1976-04-30 | 1977-08-30 | American Can Company | Silencer device for industrial burners |
US4134472A (en) * | 1977-08-29 | 1979-01-16 | Trainor John B | Combination muffler and air filter |
US4167986A (en) * | 1978-03-13 | 1979-09-18 | Adco, Ltd. | Fluid stream silencing device |
US4252212A (en) * | 1978-03-08 | 1981-02-24 | Josef Meier | Muffler for combustion engines |
US4263982A (en) * | 1979-08-06 | 1981-04-28 | Feuling James J | Muffler for internal combustion engines and method of manufacturing same |
US4316523A (en) * | 1980-06-04 | 1982-02-23 | Boretti Napoleon P | Silencer for gas discharge devices |
US4371054A (en) * | 1978-03-16 | 1983-02-01 | Lockheed Corporation | Flow duct sound attenuator |
US4419113A (en) * | 1982-07-08 | 1983-12-06 | General Motors Corporation | Diesel exhaust particulate trap with axially stacked filters |
US4530417A (en) * | 1983-06-22 | 1985-07-23 | Sw Daniel, Inc. | Suppressor |
US5145026A (en) * | 1991-03-15 | 1992-09-08 | Wilder Harvey H | Water faucet silencer apparatus |
US5212948A (en) * | 1990-09-27 | 1993-05-25 | Donaldson Company, Inc. | Trap apparatus with bypass |
US5705777A (en) * | 1995-10-20 | 1998-01-06 | Carrier Corporation | Refrigeration compressor muffler |
US5767459A (en) * | 1996-11-18 | 1998-06-16 | Ingersoll-Rand Company | Muffler for pneumatic devices |
US5952623A (en) * | 1998-01-13 | 1999-09-14 | Sterling; Robert E. | Pneumatic hand tool exhaust muffler |
US6082488A (en) * | 1999-09-22 | 2000-07-04 | Lin; Min-Chyr | Muffler for vehicles |
US6209678B1 (en) * | 1998-01-13 | 2001-04-03 | Robert E. Sterling | Pneumatic hand tool exhaust muffler |
US6332511B1 (en) * | 1999-12-07 | 2001-12-25 | Burgess-Manning, Inc. | Silencer assembly having single strand fiberglass acoustic pack material |
US20040065504A1 (en) * | 2002-10-02 | 2004-04-08 | Daniels Mark A. | Absorptive/reactive muffler for variable speed compressors |
US6751952B2 (en) * | 2002-09-06 | 2004-06-22 | Tranmax Machinery Co., Ltd. | Muffling structure for pneumatic tool |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1155400A (en) | 1981-02-09 | 1983-10-18 | George H. Williams | Muffler |
DE4213822A1 (en) | 1991-04-28 | 1993-10-28 | Gyopar Kft Budapest | Internal combustion engine exhaust gas filter |
-
2003
- 2003-07-28 US US10/628,156 patent/US7100737B2/en not_active Expired - Fee Related
-
2004
- 2004-07-22 CA CA002533299A patent/CA2533299A1/en not_active Abandoned
- 2004-07-22 KR KR1020067001903A patent/KR100772300B1/en not_active IP Right Cessation
- 2004-07-22 CN CNB2004800218256A patent/CN100538029C/en not_active Expired - Fee Related
- 2004-07-22 EP EP04778872A patent/EP1654446B1/en not_active Not-in-force
- 2004-07-22 JP JP2006521919A patent/JP2007500838A/en not_active Withdrawn
- 2004-07-22 WO PCT/US2004/023551 patent/WO2005012699A1/en active Application Filing
Patent Citations (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1844104A (en) * | 1929-05-08 | 1932-02-09 | Burgess Lab Inc C F | Exhaust muffler |
US2101460A (en) * | 1932-12-17 | 1937-12-07 | Schmidt Ulrich | Sound muffling device |
US3142354A (en) * | 1960-08-09 | 1964-07-28 | Gutehoffnungshuette Sterkrade | Sound absorption device and method of manufacture |
US3174583A (en) * | 1960-11-30 | 1965-03-23 | Giordano Michele | Muffler for internal combustion engines |
US3688870A (en) * | 1971-08-26 | 1972-09-05 | Stephen J Gibel | Through-flow aspirator muffler |
US3802163A (en) * | 1972-08-23 | 1974-04-09 | G Riojas | Internal combustion engine mufflers |
US3842932A (en) * | 1972-11-01 | 1974-10-22 | S Gibel | Sound-trap muffler |
US3949830A (en) * | 1975-06-20 | 1976-04-13 | George Koch Sons, Inc. | Fan silencer |
US4045157A (en) * | 1976-04-30 | 1977-08-30 | American Can Company | Silencer device for industrial burners |
US4134472A (en) * | 1977-08-29 | 1979-01-16 | Trainor John B | Combination muffler and air filter |
US4252212A (en) * | 1978-03-08 | 1981-02-24 | Josef Meier | Muffler for combustion engines |
US4167986A (en) * | 1978-03-13 | 1979-09-18 | Adco, Ltd. | Fluid stream silencing device |
US4371054A (en) * | 1978-03-16 | 1983-02-01 | Lockheed Corporation | Flow duct sound attenuator |
US4263982A (en) * | 1979-08-06 | 1981-04-28 | Feuling James J | Muffler for internal combustion engines and method of manufacturing same |
US4316523A (en) * | 1980-06-04 | 1982-02-23 | Boretti Napoleon P | Silencer for gas discharge devices |
US4419113A (en) * | 1982-07-08 | 1983-12-06 | General Motors Corporation | Diesel exhaust particulate trap with axially stacked filters |
US4530417A (en) * | 1983-06-22 | 1985-07-23 | Sw Daniel, Inc. | Suppressor |
US5212948A (en) * | 1990-09-27 | 1993-05-25 | Donaldson Company, Inc. | Trap apparatus with bypass |
US5145026A (en) * | 1991-03-15 | 1992-09-08 | Wilder Harvey H | Water faucet silencer apparatus |
US5705777A (en) * | 1995-10-20 | 1998-01-06 | Carrier Corporation | Refrigeration compressor muffler |
US5767459A (en) * | 1996-11-18 | 1998-06-16 | Ingersoll-Rand Company | Muffler for pneumatic devices |
US5952623A (en) * | 1998-01-13 | 1999-09-14 | Sterling; Robert E. | Pneumatic hand tool exhaust muffler |
US6209678B1 (en) * | 1998-01-13 | 2001-04-03 | Robert E. Sterling | Pneumatic hand tool exhaust muffler |
US6082488A (en) * | 1999-09-22 | 2000-07-04 | Lin; Min-Chyr | Muffler for vehicles |
US6332511B1 (en) * | 1999-12-07 | 2001-12-25 | Burgess-Manning, Inc. | Silencer assembly having single strand fiberglass acoustic pack material |
US6751952B2 (en) * | 2002-09-06 | 2004-06-22 | Tranmax Machinery Co., Ltd. | Muffling structure for pneumatic tool |
US20040065504A1 (en) * | 2002-10-02 | 2004-04-08 | Daniels Mark A. | Absorptive/reactive muffler for variable speed compressors |
US6799657B2 (en) * | 2002-10-02 | 2004-10-05 | Carrier Corporation | Absorptive/reactive muffler for variable speed compressors |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1856407A4 (en) * | 2005-03-07 | 2011-05-25 | Carrier Corp | Compressor sound suppression |
WO2006096178A1 (en) | 2005-03-07 | 2006-09-14 | Carrier Corporation | Compressor sound suppression |
EP1856407A1 (en) * | 2005-03-07 | 2007-11-21 | Carrier Corporation | Compressor sound suppression |
EP1875049A4 (en) * | 2005-04-11 | 2011-07-06 | Carrier Corp | Compressor muffler |
US20080257640A1 (en) * | 2005-04-11 | 2008-10-23 | Carrier Corporation | Compressor Muffler |
EP1875049A1 (en) * | 2005-04-11 | 2008-01-09 | Carrier Corporation | Compressor muffler |
WO2006110180A1 (en) * | 2005-04-11 | 2006-10-19 | Carrier Corporation | Compressor muffler |
US7988427B2 (en) * | 2005-04-11 | 2011-08-02 | Carrier Corporation | Compressor muffler |
CN101163866B (en) * | 2005-04-11 | 2012-05-02 | 开利公司 | Compressor muffler |
CN103169424A (en) * | 2011-12-20 | 2013-06-26 | 乐金电子(天津)电器有限公司 | Diffuser capable of effectively reducing passing noise of vanes of motor |
US8584795B1 (en) * | 2012-09-04 | 2013-11-19 | Vac-Tron Equipment, Llc | Filter silencer |
US20230392827A1 (en) * | 2017-10-11 | 2023-12-07 | Carrier Corporation | Muffler with metallic meshed rings |
WO2020223293A1 (en) * | 2019-04-29 | 2020-11-05 | Gast Manufacturing, Inc. | Sound reduction device for rocking piston pumps and compressors |
US11542933B2 (en) | 2019-04-29 | 2023-01-03 | Gast Manufacturing, Inc. | Sound reduction device for rocking piston pumps and compressors |
EP3963207A4 (en) * | 2019-04-29 | 2023-04-19 | Gast Manufacturing, Inc. | Sound reduction device for rocking piston pumps and compressors |
Also Published As
Publication number | Publication date |
---|---|
KR20060040725A (en) | 2006-05-10 |
KR100772300B1 (en) | 2007-11-02 |
US7100737B2 (en) | 2006-09-05 |
CA2533299A1 (en) | 2005-02-10 |
EP1654446A1 (en) | 2006-05-10 |
CN1849441A (en) | 2006-10-18 |
CN100538029C (en) | 2009-09-09 |
JP2007500838A (en) | 2007-01-18 |
EP1654446B1 (en) | 2012-10-10 |
WO2005012699A1 (en) | 2005-02-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7100737B2 (en) | Muffler for noise reduction | |
US8276398B2 (en) | Methods and apparatus for reducing the noise level outputted by oil separator | |
EP2582980B1 (en) | Multi-stage low pressure drop muffler | |
US20190242667A1 (en) | Firearm Sound Suppressor | |
KR930016660A (en) | Exhaust Side Silencer of Compressor | |
US20050194208A1 (en) | Compact silencer | |
US8312962B2 (en) | Sound absorber having helical fixtures | |
CN208845368U (en) | Pulsation and vibration control apparatus | |
EP3112794A1 (en) | Firearm noise suppressor | |
JP2683162B2 (en) | Muffler for centrifugal compressor and method of incorporating the same | |
US6167984B1 (en) | Device and a method for sound reduction in a transport system for gaseous medium and use of the device in an exhaust system for ships | |
US5677518A (en) | Device for deadening sound in pipelines | |
EP1888982B1 (en) | Methods and apparatus for reducing the noise level outputted by oil separator | |
US11536501B2 (en) | Oil separator with integrated muffler | |
JPH01302060A (en) | Resonance silencer for air feed duct | |
JPH04219499A (en) | Method of previously compressing sound absorbing material for noise damper for centrifugal compressor | |
JPH09250844A (en) | Freezing cycle | |
JPH06194006A (en) | Refrigerator | |
JP4296107B2 (en) | Silencer | |
CN102034470A (en) | Reactive muffler for processing low-frequency noises | |
KR101443305B1 (en) | exhaust silencer for offset interference type | |
GB2352480A (en) | I.c. engine exhaust noise suppressor | |
JPH0135031Y2 (en) | ||
US2912062A (en) | Exhaust snubber or the like | |
JPS60221615A (en) | Smokestack with silencer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CARRIER CORPORATION, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SISHTLA, VISHNU M.;REEL/FRAME:014341/0968 Effective date: 20030727 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
FEPP | Fee payment procedure |
Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.) |
|
LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20180905 |